Etymologies

From Latin cogitabilis, from cogito. (Wiktionary)

Examples

Philosophers have always talked of an absolutely necessary being, and have nevertheless declined to take the trouble of conceiving whether -- and how -- a being of this nature is even cogitable, not to mention that its existence is actually demonstrable.

Understanding cannot originate even the outline of any of these sciences, even when connected with the highest logical use of reason, that is, all cogitable syllogisms - for the purpose of proceeding from one object (phenomenon) to all others, even to the utmost limits of the empirical synthesis.

That is, it is a conception without an object (ens rationis), like noumena, which cannot be considered possible in the sphere of reality, though they must not therefore be held to be impossible -- or like certain new fundamental forces in matter, the existence of which is cogitable without contradiction, though, as examples from experience are not forthcoming, they must not be regarded as possible.

An ideal is not even given as a cogitable object, and therefore cannot be inscrutable; on the contrary, it must, as a mere idea, be based on the constitution of reason itself, and on this account must be capable of explanation and solution.

In proximity with such a lawless faculty of freedom, a system of nature is hardly cogitable; for the laws of the latter would be continually subject to the intrusive influences of the former, and the course of phenomena, which would otherwise proceed regularly and uniformly, would become thereby confused and disconnected.